$KRRO

FORMELA JEAN FRANCOIS sold $40K of KRRO (indirect holdings)

FORMELA JEAN FRANCOIS sold 2,860 indirectly-held shares of Korro Bio, Inc. (KRRO) at $13.95 across 2 trades on 2026-05-28 under a Rule 10b5-1 trading plan.

Original reporting
SEC EDGAR · FORMELA JEAN FRANCOIS
Published Jun 1, 2026, 9:35 PM UTC
Analysis
AlphAI AI DeskAI-generated
Added to AlphAI Sep 28, 2026, 3:42 AM UTC. Informational, not investment advice.
How this was made
AlphAI summarizes source reporting and applies a structured AI analysis for relevance, timing, sentiment and ticker impact. Always verify material claims with the original publisher.
AlphAI market briefInsider activity
Primary signal
$KRRO
Bearish
medium confidence
Mentioned
$KRRO
Relevance
2/10
AlphAI data visualization · based on SEC EDGAR
Decision brief

The 30-second read

$KRROBearishLow
01

Why it matters

The director's sale, executed under a pre‑arranged 10b5‑1 plan, suggests a neutral to slightly negative sentiment for KRRO in the short term.

02

Market read

Primary insider sale filing; modest relevance for short‑term traders monitoring KRRO.

03

What to watch

Potential upcoming clinical data releases or partnership news could offset the sell‑off pressure.

Relevance 2/10Novelty 2/10Timing: today

Background

SEC Form 4 filing discloses insider transactions; such filings are primary sources of corporate insider activity.

Company-level read

Ticker impact

$KRROBearishMedium confidence
Context

Director Jean Francois Formela sold 2,860 KRRO shares for $39,897 via a 10b5‑1 plan.

Expected impact

potential slight downward pressure as the market prices in the insider sell

Evidence & confidence

A director sold nearly 2,900 shares at $13.95, reducing holdings to 194,655; such sales often signal limited confidence and can prompt short‑term price dip.

Market effects

Minimal impact on the biotech sector; the sale is company‑specific.

No notable regional effect.

Limited to KRRO investors.

Counterpoint

The sale could be a routine liquidity move unrelated to fundamentals, so price may remain stable.

Key entities

  • Korro Bio, Inc.

    Biotech firm listed under ticker KRRO.

  • Jean Francois Formela

    Director of Korro Bio, filing the insider sale.

Full insider trading history

This story covers one filing. See everything behind it: every insider buy and sell on record, 10b5-1 plans, late filings, and which officers and directors are trading.

Related articles

$KRROMedAI 8/10

H.C. Wainwright reiterates Korro Bio stock rating on trial dosing

H.C. Wainwright reiterated a Buy rating and $15.00 price target for Korro Bio (KRRO) after the company dosed the first cohort in its Phase 1/2 trial for KRRO-121. The stock is down 77% over the past year, trading at $9.97. Korro Bio has a strong current ratio of 9.55 and more cash than debt. The ANCHOR trial is expected to take about a year, with primary completion estimated for the second half of 2027.

$KRROMed

Korro Reports Second Quarter 2026 Financial Results and Provides Corporate Update

Korro Bio, Inc. (KRRO) filed an SEC Form 8-K — Results of Operations and Financial Condition. Exhibit 99.1 Korro Reports Second Quarter 2026 Financial Results and Provides Corporate Update — KRRO-121, a potential first-in-class transformational treatment for hyperammonemia, remains on track to commence first-in-human clinical trial in second half of 2026 — Received Orphan